4881639 has 8 divisors (see below), whose sum is σ = 7438720. Its totient is φ = 2789496.

The previous prime is 4881631. The next prime is 4881641. The reversal of 4881639 is 9361884.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4881639 - 2³ = 4881631 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4881597 and 4881606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4881631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116209 + ... + 116250.

It is an arithmetic number, because the mean of its divisors is an integer number (929840).

Almost surely, 2^4881639 is an apocalyptic number.

4881639 is a deficient number, since it is larger than the sum of its proper divisors (2557081).

4881639 is a wasteful number, since it uses less digits than its factorization.

4881639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232469.

The product of its digits is 41472, while the sum is 39.

The square root of 4881639 is about 2209.4431425135. The cubic root of 4881639 is about 169.6375090402.

The spelling of 4881639 in words is "four million, eight hundred eighty-one thousand, six hundred thirty-nine".